|Scientists Say Adios to La Nina : Image of the Day - NASA -- Image and animation by Greg Shirah, NASA GSFC Scientific Visualization Studio|
This image shows the difference in sea surface temperature (SST) between current conditions and a normal SST for this time of year (red is 5 degrees C above normal, blue is 5 degrees C below normal,) combined with sea surface height anomaly (shown by the shading of the ocean surface,) and sea surface wind anomaly (represented by arrows.) Current SST is measured by the Tropical Rainfall Measuring Mission Microwave Imager, while sea surface height anomaly was measured by TOPEX/Poseidon, and the wi...
Keywords: What -- SST; What -- Imager; What -- TOPEX/Poseidon; Where -- Pacific Ocean; Where -- Goddard Space Flight Center (GSFC)
|Seasonal Swings in Tropical Rainfall: Image of the Day - NASA -- NASA Image Of The Day|
Rainfall is the primary way the atmosphere spreads heat around. Not surprisingly, nearly two-thirds of all rain falls in the tropics, where incoming sunlight is steady year round. Sunlight evaporates water from the warm ocean and land surfaces. The water vapor holds on to the heat that drove its evaporation until it condenses back into rain drops and releases the heat back to the atmosphere. This perpetual cycle of heating, evaporation, condensation, and rainfall moves heat from one place on Ear...
Keywords: What -- Earth; What -- Tropical Rainfall Measuring Mission (TRMM); Where -- Goddard Space Flight Center (GSFC); Where -- Indonesia; Where -- Australia
|Heavy Rains Bring Flooding to Mindanao: Image of the Day - NASA -- Images produced by Hal Pierce (SSAI/NASA GSFC) and caption by Steve Lang (SSAI/NASA GSFC)|
Several days of heavy rains led to widespread flooding on the island of Mindanao, in the southern Philippines. The heaviest rains occurred on February 11-12, 2004, as a steady northeast airflow associated with the winter monsoon persisted across the region. These northeasterly winds interacted with the Diuata Mountains that stretch north-south along the eastern part of the island to intensify the rainfall...
Keywords: What -- Tropical Rainfall Measuring Mission (TRMM); Where -- Philippines; Where -- Goddard Space Flight Center (GSFC); Where -- Philippine Sea
|Unprecedented Fires in Southern Africa : Image of the Day - NASA -- Image courtesy NASA Goddard Space Flight Center, svs.gsfc.nasa.gov/ Science Visualization Studio|
The fires that raged across southern Africa this August and September produced a thick ''river of smoke'' over the region. NASA-supported studies currently underway on the event will contribute to improved air pollution policies in the region and a better understanding of its impact on climate change. This year the southern African fire season peaked in early September. The region is subject to some of the highest levels of biomass burning in the world...
Keywords: What -- NOAA 14; Where -- Virginia; What -- Earth; What -- Spectrometer; Where -- Zambia; Where -- Angola; Where -- Namibia; Where -- Botswana; Where -- Goddard Space Flight Center (GSFC); Where -- United States of America
|Hot Towers Intensify Hurricanes : Image of the Day - NASA -- NASA images from the Goddard Space Flight Center Scientific Visualization Studio svs.gsfc.nasa.gov/vis/a000000/a003400/a003413/index.html Towers in the Tempest animation. Caption partially adapted from pita.gsfc.nasa.gov/metadot/index.pl?id=2849&isa=Newsitem&op=show NASA's Close-Up Look at a Hurricane's Eye Reveals a New ''Fuel'' Source.|
June 1 marks the beginning of hurricane season. Every year, meteorologists strive to predict hurricane behavior to reduce risk to lives and property while also minimizing the costs associated with storm preparations and evacuations. Perfect predictions of hurricane behavior are still a thing of the future, but NASA scientists are combining observations from field campaigns and the Tropical Rainfall Measuring Mission trmm.gsfc.nasa.gov/ (TRMM) satellite with supercomputing modeling power to shed ...
Keywords: What -- Tropical Rainfall Measuring Mission (TRMM); What -- Advanced Communication Technology Satellite (ACTS); Where -- North Carolina; Where -- Goddard Space Flight Center (GSFC)